Add command line support for thermal control (sonic-net#777)

Add a "show platform fanstatus" command to allow user fetch FAN status data.
Add a "show platform temperature" command to allow user fetch thermal status data.

scripts/fanshow

@@ -0,0 +1,69 @@
+#!/usr/bin/python
+"""
+    Script to show fan status.
+"""
+from __future__ import print_function
+
+import argparse
+
+from tabulate import tabulate
+from swsssdk import SonicV2Connector
+
+
+header = ['FAN', 'Speed', 'Direction', 'Presence', 'Status', 'Timestamp']
+
+FAN_TABLE_NAME = 'FAN_INFO'
+SPEED_FIELD_NAME = 'speed'
+DIRECTION_FIELD_NAME = 'direction'
+PRESENCE_FIELD_NAME = 'presence'
+STATUS_FIELD_NAME = 'status'
+TIMESTAMP_FIELD_NAME = 'timestamp'
+
+
+class FanShow(object):
+    def __init__(self):
+        self.db = SonicV2Connector(host="127.0.0.1")
+        self.db.connect(self.db.STATE_DB)
+
+    def show(self):
+        keys = self.db.keys(self.db.STATE_DB, FAN_TABLE_NAME + '*')
+        if not keys:
+            print('Fan Not detected\n')
+            return
+
+        table = []
+        for key in keys:
+            key_list = key.split('|')
+            if len(key_list) != 2: # error data in DB, log it and ignore
+                print('Warn: Invalid key in table FAN_INFO: {}'.format(key))
+                continue
+
+            name = key_list[1]
+            data_dict = self.db.get_all(self.db.STATE_DB, key)
+            try:
+                speed = float(data_dict[SPEED_FIELD_NAME])
+                if speed > 100:
+                    speed = '{}RPM'.format(int(speed))
+                else:
+                    speed = '{}%'.format(data_dict[SPEED_FIELD_NAME])
+            except ValueError as e:
+                print('Warn: cannot convert speed value from {}'.format(data_dict[SPEED_FIELD_NAME]))
+                speed = data_dict[SPEED_FIELD_NAME]
+
+            presence = data_dict[PRESENCE_FIELD_NAME].lower()
+            presence = 'Present' if presence == 'true' else 'Not Present'
+            status = data_dict[STATUS_FIELD_NAME].lower()
+            status = 'OK' if status == 'true' else 'Not OK'
+
+            table.append((name, speed, data_dict[DIRECTION_FIELD_NAME], presence, status, data_dict[TIMESTAMP_FIELD_NAME]))
+
+        if table:
+            table.sort()
+            print(tabulate(table, header, tablefmt='simple', stralign='right'))
+        else:
+            print('No fan status data available\n')
+
+
+if __name__ == "__main__":
+    fanShow = FanShow()
+    fanShow.show()

scripts/tempershow

@@ -0,0 +1,64 @@
+#!/usr/bin/python
+"""
+    Script to show fan status.
+"""
+from __future__ import print_function
+
+import argparse
+
+from tabulate import tabulate
+from swsssdk import SonicV2Connector
+
+
+header = ['NAME', 'Temperature', 'High Threshold', 'Low Threshold', 'Critical High Threshold', 'Critical Low Threshold', 'Warning Status', 'Timestamp']
+
+TEMPER_TABLE_NAME = 'TEMPERATURE_INFO'
+TEMPER_FIELD_NAME = 'temperature'
+TIMESTAMP_FIELD_NAME = 'timestamp'
+HIGH_THRESH_FIELD_NAME = 'high_threshold'
+LOW_THRESH_FIELD_NAME = 'low_threshold'
+CRIT_HIGH_THRESH_FIELD_NAME = 'critical_high_threshold'
+CRIT_LOW_THRESH_FIELD_NAME = 'critical_low_threshold'
+WARNING_STATUS_FIELD_NAME = 'warning_status'
+
+
+class TemperShow(object):
+    def __init__(self):
+        self.db = SonicV2Connector(host="127.0.0.1")
+        self.db.connect(self.db.STATE_DB)
+
+    def show(self):
+        keys = self.db.keys(self.db.STATE_DB, TEMPER_TABLE_NAME + '*')
+        if not keys:
+            print('Thermal Not detected\n')
+            return
+
+        table = []
+        for key in keys:
+            key_list = key.split('|')
+            if len(key_list) != 2: # error data in DB, log it and ignore
+                print('Warn: Invalid key in table {}: {}'.format(TEMPER_TABLE_NAME, key))
+                continue
+
+            name = key_list[1]
+            data_dict = self.db.get_all(self.db.STATE_DB, key)
+            table.append((name, 
+                          data_dict[TEMPER_FIELD_NAME], 
+                          data_dict[HIGH_THRESH_FIELD_NAME],
+                          data_dict[LOW_THRESH_FIELD_NAME],
+                          data_dict[CRIT_HIGH_THRESH_FIELD_NAME],
+                          data_dict[CRIT_LOW_THRESH_FIELD_NAME],
+                          data_dict[WARNING_STATUS_FIELD_NAME],
+                          data_dict[TIMESTAMP_FIELD_NAME]
+                          ))
+
+        if table:
+            table.sort()
+            print(tabulate(table, header, tablefmt='simple', stralign='right'))
+        else:
+            print('No tempeature data available\n')
+
+
+if __name__ == "__main__":
+    temperShow = TemperShow()
+    temperShow.show()

setup.py

@@ -67,6 +67,7 @@
         'scripts/dropconfig',
         'scripts/dropstat',
         'scripts/ecnconfig',
+        'scripts/fanshow',
         'scripts/fast-reboot',
         'scripts/fast-reboot-dump.py',
         'scripts/fdbclear',
@@ -91,6 +92,7 @@
         'scripts/sfpshow',
         'scripts/syseeprom-to-json',
         'scripts/teamshow',
+        'scripts/tempershow',
         'scripts/update_json.py',
         'scripts/warm-reboot',
         'scripts/watermarkstat',

show/main.py

@@ -1670,6 +1670,20 @@ def ssdhealth(device, verbose, vendor):
     options += " -e" if vendor else ""
     run_command(cmd + options, display_cmd=verbose)
 
+# 'fan' subcommand ("show platform fan")
+@platform.command()
+def fan():
+    """Show fan status information"""
+    cmd = 'fanshow'
+    run_command(cmd)
+
+# 'temperature' subcommand ("show platform temperature")
+@platform.command()
+def temperature():
+    """Show device temperature information"""
+    cmd = 'tempershow'
+    run_command(cmd)
+
 #
 # 'logging' command ("show logging")
 #